Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Г1НФБ |
| Designation GOST Latin |
08G1HFB |
| Transliteration |
08G1NFB |
| By chemical elements |
08Mn1НVNb |
Description
08Г1НФБ steel is used: for the production of billets, sheet ingots used for the production of parts and welded longitudinal pipes of main oil pipelines of a group of K60 strength.
Standards
| Name |
Code |
Standards |
| Sheets and strips |
В33 |
TU 14-1-5386-99 |
| Steel pipes and fittings to them |
В62 |
TU 14-3-1698-2000, TU 14-158-153-05, TU 14-158-146-2004 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Si |
Ni |
Fe |
N |
Al |
V |
Nb |
Ce |
| TU 14-3-1698-2000 |
0.06-0.1 |
≤0.01 |
≤0.02 |
1-1.4 |
0.2-0.4 |
0.15-0.3 |
Rest |
- |
0.02-0.06 |
0.05-0.1 |
0.04-0.06 |
≤0.044 |
| TU 14-1-5386-99 |
0.06-0.1 |
≤0.01 |
≤0.02 |
1-1.4 |
0.2-0.4 |
0.15-0.3 |
Rest |
- |
0.02-0.06 |
0.05-0.1 |
0.04-0.06 |
- |
| TU 14-158-146-2004 |
0.06-0.1 |
≤0.01 |
≤0.02 |
1-1.4 |
0.2-0.4 |
- |
Rest |
≤0.01 |
- |
0.05-0.08 |
0.04-0.06 |
- |
Fe is the basis.
According to TU 14-158-146-2004, the chemical composition is given for steel 08G1NFB-PL on a ladle sample for the 1st level of pipe quality. For pipes of the 2nd level of quality in the ladle sample, the mass fraction of sulfur is ≤ 0.010%, phosphorus ≤ 0.015%, nitrogen ≤ 0.006%.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
KCU, kJ/m2 |
| Longitudinal electric-welded pipes in the state of delivery on the other 14-3-1698-2000 |
|
490-590 |
590-690 |
≥20 |
- |
| Longitudinal electric-welded pipes of oil and gas in the state of delivery on the other 14-158-146-2004 (samples transverse; column cross section - outer diameter) |
| 530, 720, 820 |
≥460 |
≥590 |
≥20 |
- |
| The strip 530-1020; 1220 mm in the delivery state on the other 14-1-5386-99 (KCU-60 °C) |
|
500-600 |
590-690 |
≥22 |
≥590 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| KCU |
Toughness |
